Yeah, quick Submission statement. My understanding is he was trying to summon Babylon, why it's referred to as "the babylon working". He was trying to make a moon child as described by Crowley.

Many theorize that he fouled the working, opening a portal and unleashing all the high strangeness we see.

I don't think that's quite right. We've had weird shit before that. He may not be the key to unlocking everything, but it's a damned interesting story.